Hey, I need a bit of advice about an appropriate restaurant.

Parents' friends visiting Copenhagen in July, friendly American couple in late 70s, well-off, would like to take my partner and I out for dinner.

They're not foodies, so a memorable atmosphere is more important than ambitious cuisine. (Also, their hearing is not great, so a somewhat quiet place is good.)

No one has any dietary restrictions.

Basically: good food, attractive and quiet atmosphere, a memorable occasion.

Any tips? Thanks in advance.